Gage for determining points on structural i-beams.



W. HERNLUND. GAGE FOR DETERMINING POINTS 0N STRUCTURAL I-BEAMS. APPLIOATION FILED JULY 21, 1911.

1,046,187, I Patented Dec.3,1912.

2 SHEETS-SHEET 1.

WITNESSES I \22 INVENTOFI fi/ 4) WAYLAND HERNLUND I p by W J ATTORNEY.

COLUMBIA PLANDGRAPH Cm. wASmNu'loN. D. C.

. W. HERNLUND. GAGE FOR DETERMINING POINTS 0N STRUCTURAL I-BEAMS.

' APPLICATION FILED. JULY 21, 1911.

1,046,187. 7 Patented Dec.3,'1'912.

/ 2 SHEETS-SHEET 2.

WITNESSES INVENTOR E WAYL AND HERNLUND Q i! %a a I A M coLuMBlA PLANDGRAPH co.,wAsmNa-rom D. cv

WAYLAND HERNLUND, OF MINNEAPOLIS, MINNESOTA.

GAGE FOR DETERMINING POINTS 0N STRUCTURAL I-BEAMS.

Specification of Letters Patent.

Patented Dec. 3, 1912.

Application filed July 21, 1911. Serial No. 639,837.

1" 0 all whom it may concern:

Be it known that I, WAYLAND HERNLUND, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Gages for Determining Points on .Structural I-Beams, of which the following is a specification.

My invention relates to a gage for determining readily and accurately desired points on a web or on the outside faces of structural I-beams.

The principal object of my invention is to provide a gage for the indicated purpose which may be easily placed in transverse position on the I-beam at right angles or other angles to the length thereof, and which is provided with a member adjustable both transversely of the I-beam and vertically with respect thereto, when said gage is in position on the I-beam, so as to be eX- tended, as desired, between the flanges of the I-beam to engage the web thereof and determine the points at which drilling or other work on the I-beam shall be performed, or be used for scribing lines on sald web.

Other objects and advantages of my invention will appear in connection with the detailed description thereof and are particularly pointed out in the claims.

In the drawings which represent one form of my invention,.Figure 1 is a plan view of the gage. Fig. 2 is an elevation of the vertically adjustable marking slide. Fig. 3 is a side elevation of the gage in position upon an I-beam. Fig. 4 is an end view of the crosshead with the rule strip removed.

A ruled blade 1 is removably secured at right angles or otherwise to a straight edge 2 by means of a threaded pin 4 integral with said straight edge, the ruled blade being provided with hole into which said pin projects, the fastening together of parts 1 and 2 being effected by means of a turningnut 5. This arrangement provides what is in effect a T-square, and the ruled blade is removably secured to the head 2 because in connection with work on different sized L beams it is sometimes desirable to use a ruled blade correspondingly longer or shorter, and I propose to provide a series of such ruled blades of the desired diflerent lengths. The blade 1 has ruled thereon a scale 6, as shown. At each end of the straight edge 2 there is milled out a seat 7 in which seat are secured to said straight edge, by means of screws 9 or otherwise, depending members 10. Said members 10 have their inner faces in line with the operative edge of the member 2 and are secured so as to depend therefrom at right angles thereto. Each of the members 10 has at the top thereof-a right angled flange or lip 11 the lower face of which is in line with the lower face of the ruled blade 1 so that when the gage is applied to an I-beam, as indicated in Fig. 3, the lower faces of said lips 11 and of the ruled blade 1 will aline upon the edge of the flange of the I-beam, thus holding the blade 1 at the desired angle transversely to the I-beam and the depending members 10 at right angles to the edges of the side faces of the I-beam. In this way the tool may be used to mark lines along the faces of the I-beams at right angles to the longitudinal elements thereof.

Removably secured to the blade 1 and adapted to slide thereon is a depending member 12. Said member 12 is provided at each side thereof with flanged extensions 13 and 14 positioned so as to embrace the edges of the blade 1. The member 12 is assembled on the blade 1 simply by sliding the same thereon from the end of said blade and is clamped in any desired position on said blade by means of a hand screw 15 adapted to work in a threaded bore extending through the extension 14 so that the screw will engage the edge of the blade 1. A pointer 16 is secured to the extension 14 to ride over the scale and indicate the position of the slide 12 with respect thereto. The member 12 is provided with an interior guideway 17, shown in dotted lines in Fig. 2, which guideway may be either a bore through said member 12 or may be formed by flanged extensions thereof similar to extensions 13 and 14, or otherwise, as desired.

Adapted to slide in the guideway 17 is a shank 18 of an indicating member 19 provided with indicating or marking points 20 which may be made removable, if desired, and be secured in any desired position in said guideway 17 by means of a hand screw 21 threaded into a bore extending through the side of the member 12 so that the end of said screw will bear upon the shank 18.

In place of the pins 3 assisting in securing the ruled blade and straight edge together, I may use only the threaded central pin 4 with a hand nut '5 having a large bearing surface.

By providing the blade 1 with a pointer 22 adapted to cooperate with a ruled quadrant 23, if the hand nut 5 be loosened, the blade 1 may be set at any desired angle with the straight edge 2, and be scribed upon the web the points 20, which points may be made removable so that new sharp points may be installed when the old ones become dull.

In use, the operative will select a blade, oneof the proper length for the work in hand, securing the same to the head 2 by means of the hand nut 5 and will lay the blade in position extending across the flanges of the I-beam, adjusting the indicating device 19 on the slide 12 so that the same will just reach the web of'the I-beam. The slide will then be positioned on the scale, the first mark of which is placed so as to come above the point of junction of the flange and web of the I-beam, so as to bring the indicating points 20, which fall exactly beneath the edges of the blade 1, into position to indicate the point where drilling or other work is to be performed upon said web. By means of the straight edges of the members 10 lines at desired angles to the edges of the flanges may be scribed across the faces'of the I-beams. The indicators 20 may, as stated, be detachable marking points, so that by loosening up the screw 15 and sliding the member 12 along the blade 1 lines may be drawn across the web at right angles to thelength of the I-beam for sawing or other purposes, or at any other anangular lines may gle at which the blade is set relatively to the edge straight edge.

It will be seen that my gage is simple in construction and provides a satisfactory means for obtaining accurately working points on the web of Lbeams between the flanges thereof.

I claim:

1. A gage for structural I-beams comprising a T-square consisting of a straight head and a blade secured thereto, lips on said head having their lower faces in the plane of the lower face of the blade for engagement with the edge of the I-beam in a plurality of places to hold the blade fixed in the plane of the edges of the I-beam, a member freely slidable on said blade having a depending portion beneath the blade, a

of the I-beam with head and ing member having flanges embracing the cally and horizontally with respect to the same, and a member removably secured to each end of the head, said member comprising a lip for over-lying the edge of the flange with its lower surface in the plane of the lower surface of the blade, and a straight edge in the plane of and extending vertical to the straight edge of the head.

3. A gage for structural I-beams comprising a T-square consisting of a straight edge a blade secured thereto, a dependedges of the blade, one of said flanges being provided with a pointer, and a thumbscrew in the other flange engaging the edge of the blade for securing the member in adjusted position on the blade, said depending member being formed with an elongated opening vertically disposed with respect to. said blade, a marker slidable in said opening, a thumbscrew for securing said marker in ad justed vertical position, and points on said marker in the planes of the edges of the blade vertical to the face of the blade.

4. A gage for structural I-beams comprising a T-square consisting of a straight-edged head and a blade secured thereto, means movable on said blade and adjustable away from said blade flanges of an I-beam to locate points on the web thereof, a straight-edged member carfor entry between the ried on each end and in the plane of the straight edge of said head, the straight-edge of said last named member being vertical to the straight-edge of the blade, and a lip on each of said depending members extending inwardly from the straight edge of said head, the lower faces of the plane of the lower face of said blade.

In testimony whereof I have aflixed my slgnature 1n presence of two wltnesses.

WAYLAND HERNLUN D.

WVitnesses:

F. A. WHITELEY, H. A. BOWMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

said lips being in 

